Scissor switch mechanism

Types of Scissor Switch Mechanisms

The scissor switch mechanism operates by raising and lowering the keyboard. This system has two arms that cross each other, forming a scissor shape which stabilizes the keystroke and acts as a pivot point. When one presses a key, the arms spread apart to allow the key to move downwards. The same motion occurs in the opposite direction when it's released. Generally, there are two main types of the scissor key switch, namely traditional scissor switches and modern scissor switches.

• Traditional Scissor Switches: This is a mechanism where keys are raised and stabilized by two plastic clips that interlock with each other resembling a pair of scissors. These clips are usually found perpendicular to the keycap. This key mechanism serves to stabilize wider keys on a keyboard such as Ctrl, Alt, Space, and others. Traditional scissor switches are similar to dome switches that utilize rubber. Here, the keypress is transmitted when the dome hits the circuitry underneath.
• Modern Scissor Switches: Unlike the traditional ones, modern ones are more of a hybrid between the dome and mechanical switches. This basically means that the keypress takes place when a rubber dome occurs and is further assisted by a scissor mechanism that stabilizes the movement of the key. In the case of modern scissor switches, users get a more precise key press. Besides, users have to deal with more durability since the switch is not solely relying on rubber dome to function.

Specification and Maintenance of Scissor Switch Mechanisms

The specifications of the scissor switch mechanism highlight its features and capabilities, providing a general idea of what to expect from them.

• Dimensions: Scissor switches are designed to provide support for all kinds of keys. They also make it possible to isolate the key from the underlying circuit. They have varying dimensions depending on the specific key design they intend to support.
• Load Capacity: The load capacity is the maximum weight that the mechanism can handle and depends on the specific type and model of the scissor switch. Typically, when load capacity is exceeded, the switch will feel difficult to press, and excessive wear may result.
• Material: The material used to make the scissor switch will vary between models. Nonetheless, most are typically made of plastic or resilient material.
• Travel distance: This distance refers to the distance the switch moves or the key presses down when it is engaged. It is basically the distance an underlying component moves to activate or connect a particular circuit. This distance has a huge impact on the feel and feedback of the switch when pressing or activating.
• Actuation force: This is the force required to activate or press the switch so that it can connect or complete a circuit. The actuation force for a typical scissor mechanism switch may change according to model, design, and intended use. It can be very light, such as a switch on a laptop, to heavy for desktop devices requiring extra force for activation.

Proper maintenance of the scissor switch mechanism is important to ensure its optimal performance and longevity. Here are a few maintenance tips to consider.

• Cleaning: Regular cleaning to remove any dirt, dust, or debris that may accumulate is necessary. Use compressed air or a soft brush to gently clean the surface of the switch and around the key area.
• Avoid Spills: Liquid spills can damage the switch's functionality and performance. It's crucial to prevent any liquid from coming into contact with the scissor switch to avoid originating from the liquid.

Scenarios

Types of keyboards that use the scissor switch mechanism:

• Laptop Keyboards:

  Most laptop computers rely on the scissors switch due to its durability and compact nature. The design allows for slim profiles. This enables manufacturers to produce thin and lightweight machines without compromising the overall build quality of the keyboard.

• External Keyboard For Tablets:

  Some tablets come with an attachable external keyboard. Normally, manufacturers use the scissor switch to give the accessory a desktop-like feel. Though the tablet may be portable, it's still more convenient to use an external keyboard for longer bouts of typing. The scissor switch improves precision and productivity when using the keyboard with the tablet.

• Chiclet Keyboards:

  Most desktop keyboards use the sponge or mechanical switch method. However, some keyboards have an isolated switch for each letter. This design is referred to as the chiclet keyboard. It looks like a candy layout and operates using the scissors switch method. Isolated keys reduce the spread of debris, dirt, and liquid between switches. This principle increases the lifespan of the entire device.

• Low-profile Keyboards:

  Manufacturers sometimes try to make a keyboard as slim as possible while still including a functional key switch mechanism. The result is the low-profile keyboard that uses a scissors switch. Low profile keyboards are a popular option for gaming and office use.

How to choose a scissor switch mechanism

For retail buyers or business buyers, there are several factors to consider when choosing a scissor switch keyboard. They include:

• Durability and reliability:

  Opt for keyboards that offer resilience built to withstand extended usage without compromising performance. Please select models constructed with sturdy materials that resist wear over time.

• Travel distance and feedback:

  Consider the optimal key travel distance and tactile feedback that align with users' typing habits and preferences.

  Some people like a short travel distance and soft feedback, while others prefer longer travel distances and pronounced tactile responses.

• Design and aesthetics:

  Choose a package that matches the desired visual appeal and spatial constraints.

  Consider factors like backlighting options, compactness versus full-size layout, and overall elegance.

• User requirements:

  Consider the specific needs of the intended user group, whether they are gamers demanding swift actuation and anti-ghosting features or professionals requiring an efficient and ergonomic typing solution.

• Scissor switch mechanism suppliers:

  Research reputable suppliers with a proven track record of delivering quality products and reliable support services while considering pricing, minimum order quantities, and shipping costs.

Scissor switch mechanism Q & A

Q1. Do some people prefer how scissor switches feel when typing compared to other switch types?

A1. Yes, because they provide a balanced combination of key travel, tactile feedback, and quiet operation. These switches offer a satisfying tactile bump and respond without being too loud, making them popular in different settings like offices and homes.

Q2. Can learning institutions use scissor switch keyboards?

A2. Yes, they can use them because scissor switches offer durability, quiet operation, and comfort. In classrooms where keyboards experience constant use, whether typing essays or taking online tests, the durability of scissor switches is important. The quiet typing noise can help maintain a focused learning environment.

Q3. Can someone replace their keyboard with a scissor switch keyboard if they are into gaming?

A3. Yes, if interested in gaming, one can replace their current keyboard with a scissor switch keyboard. Many manufacturers design gaming keyboards that use scissor switches. They are designed with backlit keys and highlighted WASD keys to meet gamers' needs.

Q4. What is the lifespan of a keyboard with scissor switches?

A4. This switch typically lasts up to 5 million key presses. Manufacturers design these keyboards with tough materials to withstand heavy use, so even if the switches wear out, the keyboard will still be functional.